package com.zhz.lib.cms.manage.newscenter.dao;

import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.Query;
import org.hibernate.criterion.Example;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.zhz.lib.cms.domain.newscenter.News;

/**
 * A data access object (DAO) providing persistence and search support for News
 * entities. Transaction control of the save(), update() and delete() operations
 * can directly support Spring container-managed transactions or they can be
 * augmented to handle user-managed Spring transactions. Each of these methods
 * provides additional information for how to configure it for the desired type
 * of transaction control.
 * 
 * @see com.zhz.lib.cms.domain.newscenter.News
 * @author MyEclipse Persistence Tools
 */

public class NewsDAO extends HibernateDaoSupport {
    private static final Log   log          = LogFactory.getLog(NewsDAO.class);
    // property constants
    public static final String TITLE        = "title";
    public static final String CONTENT      = "content";
    public static final String EDITOR       = "editor";
    public static final String WRITER       = "writer";
    public static final String KEYWORD      = "keyword";
    public static final String APROVE_STATE = "aproveState";
    public static final String SORT_TYPE    = "sortType";
    public static final String TOP          = "top";
    public static final String HIT          = "hit";

    public void save(News transientInstance) {
        log.debug("saving News instance");
        try {
            getSession().save(transientInstance);
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }

    public void delete(News persistentInstance) {
        log.debug("deleting News instance");
        try {
            getSession().delete(persistentInstance);
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }

    public News findById(java.lang.Integer id) {
        log.debug("getting News instance with id: " + id);
        try {
            News instance = (News) getSession().get("com.zhz.lib.cms.domain.newscenter.News", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }

    public List findByExample(News instance) {
        log.debug("finding News instance by example");
        try {
            List results = getSession().createCriteria("com.zhz.lib.cms.domain.newscenter.News")
                .add(Example.create(instance)).list();
            log.debug("find by example successful, result size: " + results.size());
            return results;
        } catch (RuntimeException re) {
            log.error("find by example failed", re);
            throw re;
        }
    }

    public List findByProperty(String propertyName, Object value) {
        log.debug("finding News instance with property: " + propertyName + ", value: " + value);
        try {
            String queryString = "from News as model where model." + propertyName + "= ?";
            Query queryObject = getSession().createQuery(queryString);
            queryObject.setParameter(0, value);
            return queryObject.list();
        } catch (RuntimeException re) {
            log.error("find by property name failed", re);
            throw re;
        }
    }

    public List findByTitle(Object title) {
        return findByProperty(TITLE, title);
    }

    public List findByContent(Object content) {
        return findByProperty(CONTENT, content);
    }

    public List findByEditor(Object editor) {
        return findByProperty(EDITOR, editor);
    }

    public List findByWriter(Object writer) {
        return findByProperty(WRITER, writer);
    }

    public List findByKeyword(Object keyword) {
        return findByProperty(KEYWORD, keyword);
    }

    public List findByAproveState(Object aproveState) {
        return findByProperty(APROVE_STATE, aproveState);
    }

    public List findBySortType(Object sortType) {
        return findByProperty(SORT_TYPE, sortType);
    }

    public List findByTop(Object top) {
        return findByProperty(TOP, top);
    }

    public List findByHit(Object hit) {
        return findByProperty(HIT, hit);
    }

    public List findAll() {
        log.debug("finding all News instances");
        try {
            String queryString = "from News";
            Query queryObject = getSession().createQuery(queryString);
            return queryObject.list();
        } catch (RuntimeException re) {
            log.error("find all failed", re);
            throw re;
        }
    }

    public News merge(News detachedInstance) {
        log.debug("merging News instance");
        try {
            News result = (News) getSession().merge(detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

    public void attachDirty(News instance) {
        log.debug("attaching dirty News instance");
        try {
            getSession().saveOrUpdate(instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

    public void attachClean(News instance) {
        log.debug("attaching clean News instance");
        try {
            getSession().lock(instance, LockMode.NONE);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

    public static NewsDAO getFromApplicationContext(ApplicationContext ctx) {
        return (NewsDAO) ctx.getBean("NewsDAO");
    }
}